Charles f



(No Model.)

' C. F. HITCHCOCK.

WATER FILTER.

No. 604,615.l

l arnnr trice.

CHARLES F. HITCHCOCK, OF ST. LOUIS, MISSOURI, ASSIGNOR OF Tl/VO- THIRDS TO URVILLE D. `IIBBE'ITS AND PHILIP J. CONROY, OF SAME PLACE.

WATER-turna SPECIFICATION forming part of Letters Patent No. 604,615, dated May 24, 189:8.

Application filed January 5, 1898. Serial No. 665,667. (No model.)

To @ZZ whom it may concern,.-

Be it known that I, CHARLES F. HITCHCOCK, a citizen of the United States, residing at the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in lVater-Filters, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to certain improve,- ments in water-lters, the construction being such that by opening a valve in the supplypipe water is permitted to pass through a filtering medium into a closed tank and after reaching a certain pressure therein opens an automatic valve and flows out through a discharge nozzle or faucet in a filtered condition. After the desired amount of filtered water has been drawn off thel valve is moved to close the supply-pipe and open up a communication between the filter and a waste nozzle or pipe, whereupon the automatic valve closes, and the water contained in the closed tank wastes back through the ltering medium, which is cleaned thereby.

My invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Figure I is a side view of my improved filter. Fig. II is a longitudinal section. Fig. III is a detail vertical section taken on line III III, Fig. V, and which shows the automatic valve referred to. Fig. IV is a top View of the air-vent of the automatic valve. Fig. V is a detail top view of the automatic valve and its housing.

Referring to the drawings, 1 represents a lower tank or chamber, and 2 an upper tank or chamber, the two tanks being connected together by a ring 3, into the lower end of which the tank 1 is tapped and int-o the upper end of which the tank 2 is tapped.

The ring 3 has a diaphragm 4, from which depends a flange 5, that receives the upper end o f the filtering-stone 6, that is located in the lower tank 1 and which is of less diameter than the interior of the tank, so as to leave a water-space between the two. The stone 6 is made hollow, and the Water filtering therethrough enters the tank 2 through a perforation 7 in the diaphragm 5. As the water enters the tank 2, which is a closed tank, it compresses the air therein, as will be readily understood.

Formed on the upper side of the diaphragm 4 is a flange or ring S, in which fits a hollow plug or housing 9, that receives a valve 10. The plug is screwed into the flange or ring 8, as shown in Fig. III, so that it can be removed whennecessary. The valve 10 seats against the under side of the top of the plug 9 and closes openings 11 in the top of the plug. The valve is held to its seat by a spring 12, located within the plug. It is guided in its movement by a stem 13, fitting in a perforation in the top of the plug.

14 represents the discharge-nozzle, which communicates with the interior of the plug 9, as shown at 15, Fig. III.

16 represents the supply-pipe leading from the city main or other source of supply and which connects with the lower tank 1 through a short pipe 17.

18 represents the discharge pipe or nozzle.

19 is a three-way valve which controls the passage of water from the supply-pipe into the tank 1 and from the tank 1 to the discharge pipe or nozzle 1S.

The operation is as follows: When it is desired to draw iiltered water, the valve 19 is turned to open up a communication between the supply-pipe and the tank 1. lVater passing into the tank 1 filters through the stone 6 and enters the tank 2 in a filtered condition. As soon as the water in the tank 2 reaches a suiiicient pressure (due to the tank being a closed tank) the valve 10 will automatically open and the ltered water will iiow through the discharge nozzle 14. Vhen sufficient water has been drawn, the valve 19 is turned to close off the supply-pipe and open up a communication between the tank 1 and the discharge-nozzle 18. Vhen this is done, the valve 10 automatically closes under the influence of the spring l2 and the water contained in the tank 2 passes back through the iiltering-stone and wastes through the nozzle 18. As the water passes back through the stone it cleans the latter of sediment and iinpurities that settled thereon while the water IOO Was filtering therethrough. The filter now stands in an empty condition until more filtered water is wanted, and then the operation is repeated.

In order that the Water may drain out of the tank 1 each time the discharge-nozzle is opened, I provide the automatic valve with an air-vent, which I have illustrated in the form of a flexible disk 20, seated beneath a perforated plate 2l, upon which the plug 9 fits, as shown in Fig. III. The disk 2O is provided with a semicircular slit 22 (see Fig. IV) after the manner of forming an ordinary flapvalve. Vhen the water wastes out of the upper tank, this vent opens and allows a passage of air into the tank l, so as to permit the water to flow therefrom each time the filter is turned off, and when the water is turned on again the vent will close, as will be readily understood.

The valve l0 acts as a retaining-valve and its function is to hold a certain amount of Water in the clear water chamber. This amount depends upon the strength of the spring l2, and after the force of the spring l2 has been overcome by the pressure of the Water in the clear-water chamber the valve opens, allowing the clear water to flow out through the discharge. After the valve 19 is moved to open a communication between the ltering-chamber and the Waste nozzle or pipe the automatic valve closes and the water remaining in the clearwater chamber is forced back through the filtering-stone under the pressure stored in the clear-Water chamber by virtue of the presence of the checkvalve.

I claim as my inventionl. In a water-filter, the combination of a tank having a filtering medium, a clear-water tank to receive the water after it passes through the filtering medium, a supply-pipe, a valve controlling the How of water from the supply-pipe to the filtering-tank and from the latter to a waste pipe or nozzle, a dischargenozzle and an automatic valve located in the discharge from the clear-water cham ber, substantially as set forth.

2. In a water-filter, the combination of a tank or chamber for receiving the filtering medium, a tank or chamber for receiving the filtered Water, a valve for controlling the pas sage of water to the filtering-chamber and from the chamber to a Waste, and an automatic valve located in the discharge from the clear-water chamber; said last mentioned valve being arranged to open under the pressure of water in the clear-water chamber and to close on the opening of a communication between the lteringechamber and the waste, substantially as set forth.

3. In a Water-filter, the combination of afiltering-chamber, a valve controlling the iiow of water into the filtering-chamber, a clearwater chamber and an automatic valve located in the discharge from the clear-water chainber, substantially as set forth.

4. In awater-filter, the combination of a filtering-chamber with which supply and Waste pipes connect, a single valve for controlling the iow of Water from the supply-pipe to the filtering-chamber and from the iiltering-chamber to the Waste-pipe, a clear-Water chamber and an automatic valve located in the discharge from the clear-water chamber,substan tially as set forth.

5. In a Water-filter, the combination of a ltering-chamber, a valve controlling the How of water to and from the chamber, a clear-wa ter chamber and an automatic valve located in the discharge from the clear-water chamber; said automatic valve being arranged to open under the pressure created in the clearwater chamber and being arranged to close when water wastes from the filtering-chamber, and said automatic valve being provided with a vent to permit air to pass into the filtering-chamber, substantially as set forth.

6. In a water-lter, the combination of a iiltering-tank, a clear-water tank, a ring connecting the tanks together and which is provided with a perforated diaphragm, an automatic spring-valve connected to said ring, and adapted to open up a communication between the clear-water tank and a discharge-nozzle, a supply-pipe, a discharge pipe or nozzle, and a valve controlling the flow of water from the supply-pipe into the filtering-tank and from the latter to the discharge-nozzle, substantially as set forth.

'7. In a water-filter, the combination of a filtering-tank, a supplypipe and a discharge pipe or nozzle communicating with the filtering-tank, a valve controlling the oW of water from the supply-pipe to the filtering-tank and from the filtering-tank to the waste-nozzle, a clear-water tank, a ring connecting the filtering-tank and the clear-water tank, and which is provided with a perforated diaphragm and a raised flange, a plug fitting in said flange and a spring-actuated valve located within the plug, substantially as set forth.

CHARLES F. HITCHCOCK.

In presence of- E. S. KNIGHT, N. V. ALEXANDER.

IOO 

